ENERGY STAR QUALIFIED HOMES:

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• ENERGY STAR QUALIFIED HOMES
• Past, Present Future
• Presented by
• Sam Rashkin, R.A.
• National Director, ENERGY STAR for Homes

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Past1995 Observations

• Very Leaky Ducts
• Inconsistent Air Tightness
• Minimal Use of Low-E Windows
• Spotty Use of Efficient Equipment
• Poor Quality Control Systems
• No Sales Infrastructure

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PastOld ENERGY STAR Spec
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PastMarketing

• Developing Brand
• Web Site
• Consumer Fact Sheets/Brochures
• ENERGY STAR Video
• Marketing ToolKit
• Sales Agent Training

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Present2005 Observations

• Stronger Energy Codes
• Thermal Envelopes Failing
• Bigger is Better
• Still No Sales Infrastructure

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Present New ENERGY STAR Spec
Reference to 2004 IRC
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PresentMarketing

• Continuous Improvement
• Brand
• Web Site
• Consumer Fact Sheets/Brochures
• New
• Sticker on Every Home
• Outreach Campaign
• Marketing ToolKit for POS
• Sales Facilitation

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Future2007 Observations

• In the world of energy efficient homes
• Myths dont match reality

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• Myth No. 1
• Sales Agents
• Reality
• Order Takers

• Myth

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• Myth No. 2
• Performance Metrics
• Reality
• Flawed Metrics

• Myth

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Flawed Metrics

• ASHRAE 62.2
• R-Value
• SEER
• AFUE
• Water Heater Energy Factor
• Lighting Lumens
• Square Feet
• Code

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• Myth No. 2 Flawed Metrics
• ASHRAE 62.2
• Myth
• Build Tight, Ventilate Right
• Reality
• Build Tight, Maximize Source Control,
• than Ventilate as Needed Effectively

• Myth

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Maintenance required
Leaves can get sucked into grilles
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Screw pinning damper closed- No airflow
Only testing will find these things
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2 problem Very restrictive ductwork
Exit grille is over here !
Poor ducting installation
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Soffitt guy doesnt do pipe
Any problem with a little extra ?
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This is the reading from a 110 cfm fan OUCH !
Testing tells the story
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Source Control

• Moisture Bulk, Vapor
• Radon
• Combustion Emissions
• Chemicals Toxic Building Materials
• Biological Pollutants
• plus Educate Home Owners!

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• Myth No. 2 Flawed Metrics
• R-Value
• Myth
• R-Value
• Reality
• Effective R-Value

• Myth

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Effective R-Value

• Inherent
• Thermal Bridging
• Zero-Tolerance (Gaps, Voids, Compression)
• Air Tightness
• Air Barrier Assembly

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Where 4 is good
5 must be better
and 9 is Great!
Courtesy of Building Science Corp.
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Effective R-Value ExampleUninsulated
Corners/Intersections
uninsulated corner
uninsulated wall intersection
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48 wall corners and intersectionsalong with
boxed out framing
80 feet Uninsulated Wall!
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Courtesy of Building Science Corp.
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• Myth No. 2 Flawed Metrics
• SEER and AFUE
• Myth
• SEER and AFUE Efficiency
• Reality
• Best Practice HVAC Efficiency

• Myth

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Equipment Right-Sizing
Right-Sized Equipment Lower Operating Cost

EER
Increase cycle time from 3 to 8 min.
Run-Time (minutes)
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Best Practice HVAC
Equipment (ACCA Manual J/S) Ducts (ACCA Manual
D) Terminals (ACCA Manual T)

• Right-Sizing
• Air Distribution
• Air Handler
• Refrigerant Charge

Air-Tight/Internal Ducts Compact Ducts Static
Pressure Flow Across Coil Room-by-Room Air
Flow Pressure Balancing Exhaust Fan Flow Rates
Air-Tight Cabinet High-Efficiency Fan
Testing TXV Valve
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• Myth No. 2 Flawed Metrics
• Energy Factor (Water Heaters)
• Myth
• Energy Factor Efficiency
• Reality
• Efficient System Efficiency

• Myth

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Efficient Water Heating System

• Energy Factor
• Insulated Piping
• Heat Trap Above Tank/Heater
• Distribution
• Structured Plumbing
• Core System (Wet Walls)
• Manifold System

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• Myth No. 2 Flawed Metrics
• Square Feet
• Myth
• Square Feet
• Reality
• Effective Square Feet

• Myth

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Effective Square Feet

• Open Layouts
• Built-in Furniture
• Varying Ceiling Heights
• Outdoor/Indoor Linkages
• Finish and Trim
• Good Design

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20,000
40,000
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• Myth No. 2 Flawed Metrics
• Code
• Myth
• gt Code Defines Efficiency
• Reality
• gt Code Misses Low Hanging Fruit

• Myth

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Low Hanging Fruit Missed by Code-Based Programs

• Moisture Control
• Effective R-Value
• Solar Orientation with Thermal Mass
• Efficient Water Distribution
• Best Practice HVAC Systems
• Advanced Lighting
• Not So Big Homes
• some exceptions

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• Myth No. 3
• Defects Out Of Sight, Out of Mind
• Reality
• Defects No Longer Invisible

• Myth

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Defects Out of Sight
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AFFORDABILITY PROBLEMSAIR LEAKAGE
Defects No Longer Invisible
Courtesy of Building Science Corp.
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Used Homes Obsolete?
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New Homes Obsolete?
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ENERGY STAR Indoor Air Package

• Source Control
• Moisture
• Radon
• Biological
• Combustion
• Chemical

Ventilation
Filtration
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FutureENERGY STAR Spec
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FutureThe EPA Green Bundle
ENERGY STAR
EPA Water Sense
ENERGY STAR IAP
6 Mandatory Items
ENERGY STAR ALP
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Future Carbon Neutral Home
ENERGY STAR Future Spec

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For More Information

• On the Web at
• httpwww.energystar.gov/homes
• Sam Rashkin
• [phone]
• rashkin.sam_at_epa.gov